JP6639299B2 - Thermal storage panel and method of manufacturing the same - Google Patents

Description

  The present invention relates to a heat storage panel having a latent heat storage material and a method for manufacturing the same.

  In recent years, from the viewpoint of environmental friendliness, in the field of construction materials such as wall materials, floor materials, and ceiling materials, research and development has been conducted to more effectively utilize the natural energy such as thermal energy generated during indoor heating and sunlight. Are being actively pursued, and energy-saving and eco-friendly measures are being taken based on these research and development.

  In view of these points, heat storage panels using heat storage materials for wall materials, floor materials, ceiling materials, and the like have been developed. Here, as a heat storage material, a latent heat storage material capable of storing heat at a temperature equal to or higher than a melting point (phase change temperature) has been attracting attention, and various heat storage panels using this latent heat storage material have been proposed.

  As such a technique, for example, Patent Literature 1 discloses a heat storage panel in which a porous material is impregnated with a molten mixture of an ethylene-α-olefin copolymer (polymer resin) and a crystalline organic compound (latent heat storage material). Has been proposed. According to this heat storage panel, since the latent heat storage material is impregnated into the porous material together with the polymer resin, the oozing of the latent heat storage material from the porous material can be reduced.

JP-A-5-001281

  By the way, when a heat storage panel in which a porous substrate is impregnated with a latent heat storage material is used as a building material or the like, the latent heat storage material repeats melting and solidification. However, as shown in Patent Document 1, even when a porous substrate is impregnated with a high-molecular resin together with a latent heat storage material, when the latent heat storage material is melted, the oozing of the latent heat storage material from the heat storage panel is completely suppressed. Is difficult.

  Therefore, in order to suppress the oozing of the latent heat storage material from the heat storage panel, it is conceivable to cover the entire surface of the heat storage panel impregnated with the latent heat storage material with a sheet material. However, even when the entire surface of the heat storage panel is covered with the sheet material, the latent heat storage material may ooze out from the seam of the sheet material or the like.

  Furthermore, when the sheet material is bonded (laminated) to the heat storage panel by heat pressure, the viscosity of the latent heat storage material decreases as the temperature of the heat storage panel increases, and the latent heat storage material is removed from the heat storage panel before covering the sheet material. May leak to the outside.

  The present invention has been made in view of such a point, and an object of the present invention is to provide a heat storage panel capable of suppressing a part of a latent heat storage material from flowing out, and a method of manufacturing the same.

  In view of the above problems, a heat storage panel according to the present invention is a heat storage panel having a latent heat storage material, and a panel material in which a porous base material is impregnated with a latent heat storage material, and a periphery of the panel material. A frame capable of holding a part of the latent heat storage material flowing out from a periphery of the panel material in a state surrounding the panel material, a surface of the panel material surrounded by the frame, and the panel; A sheet material joined to at least the surface of the frame so as to cover the surface of the frame adjacent to the surface of the material.

  According to the present invention, the periphery of the panel material in which the porous base material is impregnated with the latent heat storage material is surrounded by the frame. Thereby, even if the latent heat storage material is melted and a part thereof flows out from the peripheral edge of the panel material, the outflowing latent heat storage material can be held by the frame. In addition, since the sheet material is covered on the surface of the panel material and the surface of the frame body adjacent thereto, it is necessary to suppress the flow of the latent heat storage material from the surface of the panel material on the side covered with the sheet material. Can be.

  As a result, even when a part of the latent heat storage material flows out of the panel material when the heat storage panel is used, it is possible to prevent the latent heat storage material from flowing out of the heat storage panel. Further, by repeating the melting and solidification of the latent heat storage material over time, even if a part of the composition elutes, it is possible to suppress the outflow of these components to the outside of the heat storage panel.

  In a more preferred embodiment, a portion of the frame body at least adjacent to the peripheral edge of the panel material is made of a porous material. According to this aspect, since the porous material of the frame is disposed on the peripheral edge of the panel material, the latent heat storage material flowing out from the peripheral edge of the panel material can be held by the porous material.

  In a more preferred embodiment, the frame is a porous frame, and the porous substrate and the porous frame are made of the same material. According to this aspect, by making the frame a porous frame, the latent heat storage material flowing out from the peripheral edge of the panel material can be held by the frame (porous frame). Further, since the porous base material impregnated with the latent heat storage material and the porous frame are made of the same material, it is easy to hold the latent heat storage material in the porous frame.

  In a further preferred aspect, the sheet member is also joined to a surface of the panel member. According to this aspect, since the sheet material is bonded not only to the surface of the frame but also to the surface of the panel material, it is difficult for a gap to be formed between the sheet material and the panel material, and the latent heat storage material is interposed therebetween. Is difficult to stay.

  The present specification also discloses a method for manufacturing a heat storage panel as the present invention. The method for manufacturing a heat storage panel according to the present invention is a method for manufacturing a heat storage panel having a latent heat storage material, the method comprising: impregnating a porous substrate with a latent heat storage material to manufacture a panel material; and A step of surrounding the periphery of the panel material with a frame capable of holding a part of the latent heat storage material flowing out from the periphery of the material; a surface of the panel material surrounded by the frame; Arranging a sheet material so as to cover the surface of the frame adjacent to the surface of the frame, and hot-pressing the sheet material to at least the surface of the frame, so that the sheet is at least exposed to the surface of the frame. And bonding to the substrate.

  According to the present invention, first, a panel material is manufactured by impregnating a porous substrate with a latent heat storage material. Next, the periphery of the panel material is surrounded by a frame, and the sheet material is arranged so as to cover the surface of the panel material and the surface of the frame adjacent thereto. In this state, the sheet member and the frame member are joined by hot-pressing the sheet member onto at least the surface of the frame member. At this time, even if the latent heat storage material of the panel material may be melted by the heat due to the heat and pressure, the molten latent heat storage material is held by the frame. Thereby, even if a part of the latent heat storage material flows out from the peripheral edge of the panel material, it is hard to flow out of the heat storage panel.

  As a more preferred aspect, a porous material is used in a portion of the frame body at least adjacent to the peripheral edge of the panel material. According to this aspect, since the porous material of the frame is disposed on the peripheral edge of the panel material, the latent heat storage material flowing out from the peripheral edge of the panel material is removed by the porous material when the sheet material is heated and the heat storage panel is used. Can be held in the material.

  As a more preferred embodiment, the porous substrate and the frame are manufactured by hollowing out one porous plate before the step of manufacturing the panel material. According to this aspect, since the porous base material and the frame are manufactured from one porous plate material, the frame is manufactured by impregnating the porous base material with the latent heat storage material and then manufacturing the panel material. It can be easily fitted into the material.

  As a more preferred embodiment, in the joining step, the sheet material is also joined to a surface of the panel material. According to this aspect, the sheet material is bonded not only to the surface of the frame but also to the surface of the panel material. It is difficult to form a gap, and it is difficult for the latent heat storage material to stay between them.

  According to the present invention, even if a part of the latent heat storage material flows out of the panel material in which the latent heat storage material is impregnated in the porous base material, it can be prevented from flowing out to the outside.

(A) is a typical exploded perspective view of the heat storage panel according to the first embodiment of the present invention, and (b) is a cross-sectional view taken along line AA of (a). (A)-(f) is a schematic diagram for demonstrating each process of the manufacturing method of the heat storage panel shown in FIG. 1 (a). It is a typical sectional view for explaining the process of joining a sheet material to a panel material and a frame by heat pressure after the process shown in Drawing 2 (e). (A) is a typical exploded perspective view of a heat storage panel according to a modification of the first embodiment, and (b) is a cross-sectional view taken along line BB of (a). (A) is a typical exploded perspective view of the heat storage panel according to the second embodiment of the present invention, and (b) is a cross-sectional view taken along line CC of (a). (A), (b) is a typical perspective view for demonstrating the process of attaching a frame to the panel material shown to Fig.5 (a). (A) is a typical sectional view of the heat storage panel concerning a 3rd embodiment of the present invention, and (b) is a mimetic diagram for explaining a part of a process of a manufacturing method of a heat storage panel shown in (a). FIG. 4 is a schematic cross-sectional view for explaining a step of joining a sheet material to a panel material and a frame by heat and pressure.

  Hereinafter, a heat storage panel according to first to third embodiments of the present invention and a method for manufacturing the heat storage panel will be described with reference to FIGS.

[First Embodiment]
FIG. 1A is a schematic exploded perspective view of a heat storage panel 1 according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A. is there.

1. Regarding the heat storage panel 1 As shown in FIGS. 1A and 1B, the heat storage panel 1 according to the present embodiment is used alone as a building material constituting a building part such as a floor, a ceiling, a roof, an inner wall, an outer wall, and the like. By using in combination with other building materials, heat storage is imparted to this part. The heat storage panel 1 has a panel shape (board shape), and the heat storage panel 1 shown in FIG. 1A has a square shape in a plan view. The shape, such as a rectangular shape, a circular shape, an elliptical shape, and a polygonal shape, is not particularly limited as viewed.

  As shown in FIG. 1A, the heat storage panel 1 includes a panel member 2, a frame 3 disposed on a peripheral edge 21 of the panel member 2, and a pair of sheets covering the panel member 2 and the frame 3 from both sides. 4 and 4 are provided.

  In this embodiment, a pair of sheet members 4 and 4 are provided on both sides of the panel member 2 and the frame 3. However, if the panel material 2 can be sealed by the installation surface on which the heat storage panel 1 is installed, the frame body 3, and the sheet material 4 on the side where the heat storage panel 1 is exposed, the heat storage panel 1 is exposed on the exposed side. Only the sheet material 4 may be provided.

  In the present embodiment, the panel member 2 is a plate-shaped member in which a porous substrate is impregnated with a latent heat storage material. The thickness of the porous substrate is not particularly limited, but is usually 3 to 30 mm, and preferably 5 to 20 mm. It is preferable that the entirety of the porous base material is impregnated with the latent heat storage material. However, the present invention is not limited to this, and only a part of the surface layer portion of the porous base material may be impregnated with the latent heat storage material.

  The porous substrate is made of a material having fine voids capable of impregnating and holding the latent heat storage material, and the material is not limited as long as the material can be impregnated with the latent heat storage material.

  Examples of the material of the porous substrate include a wood board such as a particle board (PB) and a wood fiber board (MDF, insulation board, hard board, etc.). In addition, mention may be made of mineral boards such as gypsum board, calcium silicate board, etc., mineral board in which mineral substances are formed into a board shape, board in which inorganic fibers such as glass wool, carbon fiber, or metal fiber are integrated. Can be.

The latent heat storage material impregnated in the porous substrate is, for example, a latent heat storage material that changes its phase from a solid phase to a liquid phase due to heating of a room, heat by sunlight, or the like, and preferably has a phase change temperature of 18 ° C to 30 ° C. Latent heat storage material within the range. Specific examples include sodium sulfate hydrate, calcium chloride hydrate, paraffin (for example, C ₁₈ H ₃₈ ), polyethylene glycol (molecular weight of 500 to 1,000), sodium sulfate decahydrate, and the like. The material is not particularly limited as long as heat can be stored at the change temperature or higher.

  In addition, a latent heat storage material that becomes a gel at or above the phase change temperature may be used. Since the state changes from a solid state to a gel state at the phase change temperature or higher, the shape of the latent heat storage material can be easily maintained even when the phase change temperature or higher. Examples of such a latent heat storage material include a latent heat storage material MHSR series manufactured by Mitsubishi Cable Industries, Ltd.

  Further, for example, as disclosed in International Publication No. WO2015 / 174523 filed by the applicant, a heat storage material composition containing a predetermined hydrogenated styrene-based thermoplastic elastomer in a latent heat storage material is added to the panel material 2. It may be impregnated. Examples of the hydrogenated styrene-based thermoplastic elastomer include styrene-ethylene / butylene-styrene block copolymer (SEBS), styrene-ethylene / propylene block copolymer (SEP), and styrene-ethylene / propylene-styrene block copolymer ( SEPS) and at least one type (a mixture of two or more types) selected from the group consisting of styrene-ethylene-ethylene / propylene-styrene block copolymers (SEEPS).

  As shown in FIG. 1A, in the present embodiment, the frame body 3 surrounds the peripheral edge 21 of the panel material 2, and the latent heat storage material flowing out of the peripheral edge 21 of the panel material 2 in a state surrounding the panel material 2. Is a member capable of holding a part of the. Specifically, in the present embodiment, the frame 3 is a porous frame made of a porous material, and in a preferred embodiment, the porous frame is made of the same material as the above-described porous base material. It may be made of a different material from the porous substrate. Therefore, the frame 3 can be held by the gap of the porous material of the latent heat storage material flowing out from the peripheral edge 21 of the panel material 2.

  Here, in the present specification, "the frame can hold a part of the latent heat storage material" means that the molten latent heat storage material can be held inside the frame 3, or the molten latent heat storage material can be held. This means both cases where the heat storage material can be held in the space between the frame 3 and the panel material 2. The present embodiment and a second embodiment described later disclose an example corresponding to the former, and the third embodiment discloses an example corresponding to the latter.

  The frame body 3 has the same thickness as the panel material 2, and has a through hole 31 that can hold the panel material 2 (specifically, a porous base material) while surrounding the panel material 2. ing. In the present embodiment, the size of the through hole 31 is the same as the size of the panel material 2. As a result, the panel member 2 can be fitted (fitted) into the frame body 3, and both surfaces of the frame body 3 and the panel material 2 can be flush with each other in the fitted state. (See FIG. 1B).

  The sheet member 4 covers the surface 22 of the panel member 2 so as to cover the surface 22 of the panel member 2 surrounded by the frame member 3 and the surface 32 of the frame member 3 adjacent to the surface member 22 of the panel member 2. It is joined to the surface 32 of the frame 3. In the present embodiment, the sheet member 4 is joined to the surface 22 of the panel member 2 and the surface 32 of the frame 3, but by joining the surface 32 of the frame 3 with the sheet member 4, the frame member 3 is joined. If the latent heat storage material of the panel member 2 does not flow out from between the surface 32 of the sheet member 4 and the sheet member 4, the sheet member 4 may be joined only to the surface 32 of the frame 3.

  The sheet material 4 is non-porous, and the material is not particularly limited as long as the material does not transmit the latent heat storage material. For example, examples of the material of the sheet material 4 include thermoplastic resins such as polyethylene resin, polypropylene resin, polyvinyl chloride resin, polycarbonate resin, nylon resin, and polyethylene terephthalate resin (PET resin). A metal sheet or film such as an aluminum foil may be further laminated on the material, or a metal sheet or film may be interposed in a multi-layer sheet material made of the above resin material.

  In the present embodiment, the sheet member 4 is directly joined to the surface 22 of the panel member 2 and the surface 32 of the frame 3 by the heat and pressure described later. As is clear from the manufacturing method described later, in the heat storage panel 1 according to the present embodiment, a part of the thermoplastic resin of the surface layer of the sheet material 4 is filled with the void of the porous base material of the panel material 2 and the frame 3 ( The pores of the porous frame are impregnated. Thereby, the sheet member 4 can be more firmly joined to the panel member 2 and the frame 3. Further, in the present embodiment, since the sheet member 4 and the surface 22 of the panel member 2 are joined, a gap is hardly formed between them. Therefore, the molten latent heat storage material hardly stays between the sheet material 4 and the panel material 2.

  In the present embodiment, a thermoplastic resin is exemplified as the material of the sheet material 4. However, for example, the sheet material 4 may be made of a sheet or film made of metal such as aluminum. In this case, an adhesive resin is interposed between the sheet member 4 and the surface 22 of the panel member 2 and the surface 32 of the frame 3. As a resin for bonding, any resin of a thermoplastic resin or a thermosetting resin may be used as long as the bonding is maintained and the resin is solidified (cured) after hot pressing described below.

  Thus, the peripheral edge 21 of the panel material 2 in which the porous base material is impregnated with the latent heat storage material is surrounded by the frame 3. Thereby, even if the latent heat storage material is melted during use and a part thereof flows out from the peripheral edge 21 of the panel material 2, the outflowing latent heat storage material can be held in the gap of the porous material of the frame 3. it can.

  In addition, since the sheet material 4 is covered on the surface 22 of the panel material 2 located on both sides of the heat storage panel 1 and the surface 32 of the frame 3 adjacent thereto, the surface 22 of the panel material 2 Outflow of the latent heat storage material can be suppressed.

  As a result, even if a part of the latent heat storage material flows out of the panel material 2 when the heat storage panel 1 is used, it can be suppressed that the latent heat storage material flows out of the heat storage panel 1. Further, by repeating the melting and solidification of the latent heat storage material over time, even if a part of the composition elutes, it is possible to suppress the outflow of these components to the outside of the heat storage panel 1.

  Furthermore, the frame 3 is a porous frame, and the porous base material of the panel material 2 and the frame 3 (porous frame) are made of the same material. The difference in expansion is small, and a gap is hardly formed between the panel member 2 and the frame 3 due to a change in temperature. Furthermore, since the frame 3 also has high impregnation of the latent heat storage material like the porous base material of the panel material 2, the latent heat storage material flowing out of the panel material 2 is held by the frame 3 (porous frame). easy.

2. 1. Method for Manufacturing Heat Storage Panel 1 A method for manufacturing the heat storage panel 1 shown in FIG. 1 will be described below with reference to FIGS. FIGS. 2A to 2F are schematic diagrams for explaining each step of the method for manufacturing the heat storage panel 1 shown in FIG. 1A. FIG. 3 is a schematic cross-sectional view for explaining a step of joining the sheet member 4 to the panel member 2 and the frame body 3 by heat and pressure after the step shown in FIG.

  First, as shown in FIG. 2A, one porous plate 2A is prepared, and the porous plate 2A is hollowed out using a cutter or the like, so that the porous plate 2A is formed as shown in FIG. 2B. The base material 2B and the frame 3 are manufactured. A through hole 31 is formed in the frame 3. In the present embodiment, as a preferred embodiment, the porous substrate 2B and the frame 3 are manufactured from one porous plate 2A, but these may be manufactured individually.

  The porous substrate 2B obtained in the step shown in FIG. 2B is immersed in the latent heat storage material 2C in the immersion tank 8. The latent heat storage material 2C is accommodated in the immersion tank 8 in a molten state. Thereby, the panel member 2 in which the porous base material 2B is impregnated with the latent heat storage material 2C can be manufactured. In the present embodiment, the porous substrate 2B is impregnated with the latent heat storage material 2C by immersing the porous substrate 2B in the immersion tank 8. However, the porous substrate 2B may be impregnated with the latent heat storage material 2C. If possible, the method is not particularly limited. For example, the porous substrate 2B may be impregnated with the latent heat storage material 2C by arranging the porous substrate 2B in a mold and pouring the molten latent heat storage material into the mold.

  Next, as shown in FIG. 2D, the peripheral edge 21 of the panel material 2 is surrounded by the frame 3. Specifically, since the through-holes 31 having the same size as the size of the porous base material 2B of the panel member 2 are formed in the frame 3, the through-holes formed in the frame 3 with the panel member 2 are formed. 31 and the panel member 2 can be fitted to the frame 3.

  Since the porous base material 2B and the frame 3 of the panel material 2 are manufactured from one porous plate material 2A, their thicknesses are substantially the same, and the surface 22 of the panel material 2 and the frame 3 can be substantially flush with both sides thereof. Thereby, even if the sheet materials 4 described later are joined (attached), the heat storage panel 1 having a flat surface can be obtained.

  Next, as shown in FIG. 2 (e), the surface 22 of the panel member 2 surrounded by the frame member 3 and the surface 32 of the frame member 3 adjacent to the surface member 22 of the panel member 2 are covered. A pair of sheet members 4 and 4 are arranged from both sides.

  Next, as shown in FIG. 3, the sheet material 4 on both sides is hot-pressed on the surface 22 of the panel material 2 and the surface 32 of the frame 3 by using a hot-pressing device 9, so that the panel material 2 and the frame 3 Thereby, the heat storage panel 1 shown in FIG. 2F can be obtained. In the present embodiment, the thermoplastic resin of the sheet material 4 impregnates the porous base material of the panel material 2 and the frame 3 (porous frame) by this heat pressure.

  Here, as shown in FIG. 3, at the time of hot pressing, a frame 3 (porous frame) made of a porous material exists in a portion adjacent to the peripheral edge 21 of the panel material 2. Therefore, even if the latent heat storage material of the panel material 2 may be melted by the heat due to the heat and the molten latent heat storage material may flow out from the peripheral edge 21 of the panel material 2, the latent heat storage material is formed by the porous frame. It is held by a certain frame 3. Thereby, even if a part of the latent heat storage material flows out from the peripheral edge 21 of the panel material 2, it is hard to flow out of the heat storage panel 1 to be manufactured.

  As described above, in the present embodiment, the sheet material 4 is joined to the surface 22 of the panel material 2 and the surface 32 of the frame 3 by fusing the resin on the surface of the sheet material 4. However, an adhesive of a thermoplastic resin or an adhesive of an uncured thermosetting resin is disposed between the sheet material 4 and the surface 32 of the frame 3, and the sheet 4 and the frame are heated and pressed. 3 may be joined. Further, in the present embodiment, the pair of sheet members 4 and 4 are joined to the panel member 2 and the frame 3 at the same time, but each sheet member 4 may be joined individually.

  In FIG. 1, the frame body 3 is a porous frame body. However, if at least a portion adjacent to the peripheral edge 21 of the panel material 2 is made of a porous material, the heat storage panel 1 and the method for manufacturing the heat storage panel 1 will be described. Leakage of the latent heat storage material to the outside can be suppressed.

  Therefore, the heat storage panel 1 shown in FIG. 4 may be used. FIG. 4A is a schematic exploded perspective view of a heat storage panel 1 according to a modification of the first embodiment, and FIG. 4B is a cross-sectional view taken along line BB of FIG.

  In this modification, the frame has an inner frame 34 and an outer frame 35. The inner frame 34 is a portion adjacent to the peripheral edge 21 of the panel material 2 and is made of a porous material. The outer frame 35 serves as a reinforcing member surrounding the inner frame 34, and is made of, for example, a nonporous material.

  In this modification, the above-described inner frame 34 is not particularly limited in its material as long as it can hold a latent heat storage material, and can include the above-described materials and the like. It may be the same material as the substrate. The outer frame 35 may be an ordinary plywood made of hardwood or softwood, laminated wood, kraft paper, cardboard, resin molding, resin foam, or a combination of metal hollow bars in a frame state, and the like. The material is not particularly limited.

[Second embodiment]
FIG. 5A is a schematic exploded perspective view of the heat storage panel 1 according to the second embodiment of the present invention, and FIG. 5B is a cross-sectional view taken along line CC of FIG. 5A. is there. The heat storage panel 1 according to the second embodiment differs from that of the first embodiment in the structure of the panel material 2 and the frame 3. Other configurations are the same as those of the first embodiment, and thus the same reference numerals are given and the detailed description is omitted.

  As shown in FIGS. 5A and 5B, the frame 3 of the heat storage panel 1 according to the second embodiment includes four columnar frame constituent members 3 a serving as a skeleton of the frame 3. Each frame constituent member 3a is connected to the panel member 2 via the first connecting member 56. Specifically, a first recess 36 is formed at the center of the side surface of each frame component 3a. In the panel member 2, a second concave portion 26 is formed at a position facing the first concave portion 36 in a state where the frame 3 is surrounded by the peripheral edge 21 of the panel member 2. The first connecting member 56 is fitted in the first concave portion 36 and the second concave portion 26.

Further, the frame components 3a are connected to each other via a second connecting member 57. Specifically, the third concave portions 37 are formed at both ends of the frame component 3a, and the third concave portions 37 of the frame components 3a are formed in a state where the frame 3 is surrounded by the peripheral edge 21 of the panel material 2. One recess is formed.
The second connecting members 57 are fitted in the third concave portions 37.

  A method for manufacturing the heat storage panel 1 according to the present embodiment will be briefly described below. FIGS. 6A and 6B are schematic perspective views for explaining a process of attaching the frame 3 to the panel member 2 shown in FIG. 5A.

  First, a porous base material on which the second concave portion 26 is formed is prepared, and the porous base material is impregnated with a latent heat storage material in the same manner as in the first embodiment to manufacture the panel material 2. Next, as shown in FIG. 6A, four frame components 3a are prepared, and the first connecting member is provided in the first concave portion 36 of each frame component 3a and the second concave portion 26 of the panel material 2. 56 are fitted, and each frame component 3a is connected to the panel material 2. Next, as shown in FIG. 6B, the second connecting member 57 is fitted into the third concave portion 37 of the adjacent frame component 3a, and the frame components 3a are connected to each other.

  Thereafter, similarly to the first embodiment, the sheet member 4 is disposed on the surface 22 of the panel member 2 and the surface 32 of the frame member 3, and the sheet member 4 is heated and pressed to form the sheet member 4 on the surface 22 and the frame member 3. To the surface 32.

  In the second embodiment, the panel member 2 and the frame component 3a are connected to each other and the frame component 3a are connected to each other by a so-called “hiring patch” using the first connection member 56 and the second connection member 57. . However, glued plywood (potato plywood, flat plywood), parting plywood, book plywood, ant plywood, mutual ply, sloped ply, dowel plywood, wood screw ply, ant wedge ply, or end plywood, etc. These connections may be made with a blow (width width), or may be made with an adhesive or staples.

[Third embodiment]
FIG. 7A is a schematic cross-sectional view of the heat storage panel 1 according to the third embodiment of the present invention, and FIG. 7B is a diagram illustrating steps of a method of manufacturing the heat storage panel 1 illustrated in FIG. It is a typical sectional view for explaining a part, and is a figure for explaining a process of joining sheet material 4 to panel material 2 and frame 3 by heat pressure.

  The heat storage panel 1 according to the third embodiment is different from that of the first embodiment in that the frame 3 is made of a material that is not impregnated with the latent heat storage material, such as a nonporous material, or a material that is hardly impregnated. 3 is that a holding space 39 capable of holding a part of the latent heat storage material flowing out from the peripheral edge 21 of the panel material 2 in a state surrounding the panel material 2 is provided. Other configurations are the same as those of the first embodiment, and thus the same reference numerals are given and the detailed description is omitted.

  In the present embodiment, a holding space 39 is formed between the panel member 2 and the frame 3 in a state where the frame 3 is surrounded by the peripheral edge 21 of the panel member 2. The holding space 39 forms a closed space by joining the sheet material 4 to the panel material 2 and the frame 3 so as to cover the surface 22 of the panel material 2 and the surface 32 of the frame 3. The frame 3 is made of a material having a lower latent heat storage material impregnating property than the porous base material of the panel material 2. For example, even if the material is exemplified by the material of the outer frame 35 shown in the second embodiment. Good.

  By providing such a holding space 39, even if the latent heat storage material impregnated in the panel material 2 flows out from the peripheral edge 21 of the panel material 2, the latent heat storage material is held in the holding space 39. It is possible to prevent the latent heat storage material from flowing out.

  In the method for manufacturing the heat storage panel 1 according to the present embodiment, the above-described frame 3 is separately prepared, the peripheral edge 21 of the panel material 2 is surrounded by the frame 3, and thereafter, the same steps as the steps described in the first embodiment. Then, the heat storage panel 1 is manufactured.

  In the present embodiment, as shown in FIG. 7B, when the sheet material 4 is joined to the panel material 2 and the frame 3 by heat and pressure, a holding space is provided between the panel material 2 and the frame 3. 39 are formed. The holding space 39 holds the latent heat storage material even if the latent heat storage material of the panel material 2 melts at the time of hot pressing and the molten latent heat storage material flows out from the peripheral edge 21 of the panel material 2. As a result, even if a part of the latent heat storage material flows out from the peripheral edge 21 of the panel material 2, it is difficult for the latent heat storage material to flow out of the manufactured heat storage panel 1.

  As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the above embodiments, and various designs may be made without departing from the spirit of the present invention described in the claims. Changes can be made.

  In the present embodiment, a sheet material having the same size as one or the other surface of the frame is prepared, and the sheet material is joined to the frame. For example, a sheet material larger than the opening of the through hole of the frame is prepared. If the sheet material is joined to the frame along the periphery of the opening, the size of the sheet material may be smaller than the size of the sheet material in the embodiment.

  1: heat storage panel, 2: panel material, 2A: porous plate material, 2B: porous base material, 2C: latent heat storage material, 3 frames, 3a: frame component material, 4: sheet material, 31: through hole

Claims (4)

A heat storage panel having a latent heat storage material,
A panel material in which a latent heat storage material is impregnated in a porous base material,
A frame that surrounds the periphery of the panel material and can hold a part of the latent heat storage material flowing out from the periphery of the panel material while surrounding the panel material,
A sheet material bonded to at least the surface of the frame, so as to cover the surface of the panel material in a state surrounded by the frame and the surface of the frame adjacent to the surface of the panel material. Prepared ,
The heat storage panel , wherein the frame is a porous frame, and the porous substrate and the porous frame are made of the same material . The heat storage panel according to claim 1 , wherein the sheet material is also joined to a surface of the panel material. A method for manufacturing a heat storage panel having a latent heat storage material,
A step of manufacturing a panel material by impregnating a porous substrate with a latent heat storage material,
A step of surrounding the periphery of the panel material with a frame capable of holding a part of the latent heat storage material flowing out from the periphery of the panel material,
A step of arranging a sheet material so as to cover the surface of the panel material in a state surrounded by the frame and the surface of the frame adjacent to the surface of the panel material,
Bonding the sheet material to at least the surface of the frame by hot-pressing the sheet material to at least the surface of the frame ,
A method for manufacturing a heat storage panel , wherein the porous base material and the frame are manufactured by hollowing out one porous plate material before the step of manufacturing the panel material . The method according to claim 3 , wherein in the joining step, the sheet material is also joined to a surface of the panel material.

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